Question

ncreasing the temperature of a fixed amount of gas in a rigid container will __________.
decrease the collision rate between gas particles

increase the collision rate between gas particles

not affect the collision rate between gas particles

decrease the average kinetic energy of the gas particles

Answer 1

answer: increase the collision rate between gas particles

Heating a gas increases it's particle speed, so more collisions will occur

Answer 2

@biire2u is correct. In fact temperature is a measure of the average kinetic energy in a substance, so by increasing temperature that means your increasing kinetic energy which means velocity is increasing. Gases have a property called "mean free path": the average distance a gas molecule will travel between collisions with other molecules, given a pressure and a number of molecules. So increasing the velocity shortens the time required for a gas molecule to cover that mean free path, meaning it will have more collisions per unit time.